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TM-D Thermal-Magnetic Trip Unit for 3P and 4P Circuit Breakers from 80 A to 250 A

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Introduction

The TM-D thermal-magnetic trip unit is designed to protect conductors in commercial and industrial electrical distribution.

Description

The adjustment dials are on the front of the trip unit:

A Setting range for the TM-D thermal-magnetic trip unit

B Adjustment dial for the thermal protection pickup Ir

C Adjustment dial for the magnetic protection pickup Ii (for TM-D 200/250 only)

Setting the Thermal Protection

The thermal protection pickup Ir is set by a 4-setting dial.

Turning the thermal protection adjustment dial (A) modifies the trip curve as shown (B) .

The following table shows the values of the pickup Ir (in amperes) for thermal protection (values indicated on the dial) with respect to every trip unit rating, relative to the position of the dial Ir .

Setting the Magnetic Protection on Trip Units with In from 80 A to 160 A

For trip units rated below 200 A, the magnetic protection pickup cannot be adjusted and equals the value shown below:

Setting the Magnetic Protection on Trip Units with In from 200 A to 250 A

For trip units rated between 200 A and 250 A, the magnetic protection pickup Ii is set using a 6-setting dial.

Turning the magnetic protection adjustment dial (A) modifies the trip curve as shown (B) .

The following table shows the values of the pickup Ii (in amperes) for magnetic protection (values indicated on the dial), relative to the position of the Ii dial:

Example of Application

Power supplied by a 1,250 kVA transformer - 400 V, 4%

Protection of a distribution box located 15 m away, the loads on which are mainly for lighting (incandescent bulbs), heating, and small machines

The value of the calculated rated current (load consumption) is In = 175 A.

The following illustration shows the installation diagram:

tm trip unit

Calculations performed on the installation in accordance with the regulations can be used to determine the characteristics of the appropriate ComPact NSX circuit breaker to install (calculations performed using the Ecostruxure Power Design – Ecodial software).

The following table presents the circuit breaker selection:

The following table shows the trip unit protection settings:

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tm trip unit

TM-D Thermal-Magnetic Trip Unit for 3P and 4P Circuit Breakers up to 63 A

Introduction

The TM-D thermal-magnetic trip unit for 3P/4P circuit breakers up to 63 A are interchangeable trip units.

They are designed for AC and DC general-purpose applications.

The TM-D interchangeable 3P/4P trip units provide:

o adjustable thermal threshold

o fixed magnetic pickup

Description

The setting range and adjustment dials are on the front of the trip unit.

A     Setting range for TM-D thermal-magnetic 3P/4P trip unit

B     Adjustment dial for the thermal protection pickup Ir

Setting the Thermal Protection

The thermal protection pickup Ir is set by a 4-setting dial.

Turning the thermal protection adjustment dial ( A ) modifies the trip curve as shown ( B ).

The table below shows the values of the pickup Ir (in amperes) for thermal protection (values indicated on the dial) with respect to every trip unit rating, relative to the position of the dial Ir.

Setting the Magnetic Protection

The magnetic protection pickup cannot be adjusted and equals the value shown below:

DOCA0140EN-01

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C253TM200 Product picture Schneider Electric

trip unit TM200D for ComPacT NSX 250 circuit breakers. thermal magnetic. rating 200 A. 3 poles 3d

Poles description:

[In] rated current:

Trip unit name:

Sustainability

tm trip unit

Well-being performance

Certifications & standards.

REACh Declaration

Compliant with Exemptions

China RoHS declaration

Product out of China RoHS scope. Substance declaration for your information

Product Environmental Profile

End of Life Information

IMAGES

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  2. TM-D Thermal-Magnetic Trip Unit for 3P and 4P Circuit Breakers from 80

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  3. The Basics Of Circuit Breaker Tripping Units

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  4. LT3300T Thermal Magnetic Trip Unit for LD or HLD Frames

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  5. Thermal-Magnetic Trip Unit Summary

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COMMENTS

  1. TM-D Thermal-Magnetic Trip Unit for 3P and 4P Circuit Breakers from 80

    A Setting range for the TM-D thermal-magnetic trip unit. B Adjustment dial for the thermal protection pickup Ir. C Adjustment dial for the magnetic protection pickup Im (for TM-D 200/250 only). Setting the Thermal Protection. The thermal protection pickup Ir is set by a 4-setting dial. Turning the thermal protection adjustment dial (A) modifies the trip curve as shown (B).

  2. The Basics Of Circuit Breaker Tripping Units

    Figure 2 - TM thermal-magnetic and MA magnetic tripping units. Go back to CB tripping units ↑. Electronic tripping units // The electronic trip units instead use a microprocessor to process the current signal and operate the circuit breaker opening in case of fault.In addition to this, electronic tripping units offer more tripping criteria which are not feasible with electromechanical ...

  3. circuit breaker, EasyPact EZC250N, TMD, 250A, 4 poles 3d

    Trip unit name TM-D Trip unit technology Thermal-magnetic Trip unit rating 250 A at 50 °C Protection type Short-circuit protection Overload protection Pollution degree 3 conforming to IEC 60947. 2 Complementary Control type Toggle Mounting mode Fixed Mounting support Backplate

  4. C103TM100

    Trip unit name: EAN Code: 3606481999566 ... Green Premium TM label is Schneider Electric's commitment to delivering products with best-in-class environmental performance. Green Premium promises compliance with the latest regulations, transparency on environmental impacts, as well as circular and low-CO 2 products.

  5. TM-D Thermal-Magnetic Trip Unit for 3P and 4P Circuit Breakers from 80

    The TM-D thermal-magnetic trip unit is designed to protect conductors in commercial and industrial electrical distribution. The trip unit exists in two configurations: 3P, 3D. 4P, 3D. Description. The adjustment dials are on the front of the trip unit: A Setting range for the TM-D thermal ...

  6. What is the difference between the TM-D and TM-G and MA tripping units

    What is the difference between the TM-D and TM-G and MA tripping units for compact NSX MCCB Circuit Breakers. ... Ir that can be adjusted in amps from 0.7 to 1 times the rating of the trip unit (16 A to 250 A), corresponding to settings from 11 to 250 A for the range of trip units .

  7. TM-D Thermal-Magnetic Trip Unit for 3P and 4P Circuit Breakers up to 63 A

    The TM-D thermal-magnetic trip unit for 3P/4P circuit breakers up to 63 A are interchangeable trip units. They are designed for AC and DC general-purpose applications. The TM-D interchangeable 3P/4P trip units provide: o adjustable thermal threshold. o fixed magnetic pickup.

  8. Trip units

    Two types of Thermo-Magnetic trip units: TMF: Thermo-Mag Fixed. TMA: Thermo-Mag Adjustable See details in the next page. Standard Protection. Standard Protection. Standard Protection. Advanced Protection. Advanced Protection. Connectivity & Communication.

  9. C253TM250

    Trip unit name: EAN Code: 3606481999610 ... Green Premium TM label is Schneider Electric's commitment to delivering products with best-in-class environmental performance. Green Premium promises compliance with the latest regulations, transparency on environmental impacts, as well as circular and low-CO 2 products.

  10. C166TM125

    Trip unit TM125D, ComPacT NSX160/250, 4 poles 3D (neutral not protected), thermal magnetic protections, 125A rating. C166TM125. ... Green Premium TM label is Schneider Electric's commitment to delivering products with best-in-class environmental performance.

  11. Trip unit only

    Siemens Industry Catalog - Low-Voltage controls and distribution - Circuit Protection Devices - Molded Case Circuit Breakers (MCCB) - VL Molded Case Circuit Breakers - LG-frame up to 600A - 3-pole, TM - Trip unit only

  12. What is the difference between the following trip units (TMD and TMG

    TMG: it is a thermal magnetic trip unit used for Generation plants (it has extra different protection functions for generation phase that are not found in TMD) Released for: Schneider Electric Egypt and North East Africa. Published on: 3/2/2014 Last Modified on: 7/24/2022. Explore more. Range:

  13. C253TM200

    trip unit TM200D for ComPacT NSX 250 circuit breakers. thermal magnetic. rating 200 A. 3 poles 3d. ... Sustainability. Green Premium TM label is Schneider Electric's commitment to delivering products with best-in-class environmental performance. Green Premium promises compliance with the latest regulations, transparency on environmental ...